@ControllerAdvice
final class AppExceptionHandler {

    @ExceptionHandler({NotFoundException.class})
    ResponseEntity notFoundHandler(Exception e) {
        return ResponseEntity
                .status(HttpStatus.NOT_FOUND)
                .body(e.getMessage());
    }

    @ExceptionHandler({IOException.class})
    ResponseEntity iOExceptionHandler(Exception e) {
        return ResponseEntity
                .status(HttpStatus.INTERNAL_SERVER_ERROR)
                .body(e.getMessage());
    }
}